25 gold to open 3 more crates option, please change location, or give option for confirmation.

After opening 3 crates from a mission, we get the option to watch an ad that gives us three more crates. Awesome! Unfortunately, the ads stop usually around 3 or 4 if you run missions consecutively. I have miss clicked where the ad button usually would be and spent my hard earned 25 gold when not intending to. Could you perhaps give us a confirmation option, or place the button not where the ad button would normally be?? I have played other games where players are duped into spending our hard earned currency unintentionally. This would be a helpful and show your game isn't like this. Thanks.